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RTH NEW DELHI
INDIA METEOROLOGICAL DEPARTMENT
NARENDRA NIGAM
[email protected]
A massive modernization program encompassing observation, connectivity, supercomputing and forecasting facilities
under an over-arching digital framework has been undertaken on priority basis in India. Under modernization program RTH New Delhi
system will be replaced by a new system conforming to GISC specifications. At present as per WMO No.386 it is performing
the following functions :
1. Collecting the observational data originating from IMD’s national network and associated
National Meteorological Centre’s ( NMC ) of neighboring countries and transmitting such data in appropriate form
on the MTN, either directly or through the appropriate WMC/RTH.
2. Relaying selectively on the circuits of the MTN, as internationally agreed in the appropriate form, the meteorological
data and processed meteorological information products received from these circuits and/or from RTH’s not situated on the MTN.
3. Ensuring the selective distribution of meteorological data and meteorological information products to
the IMD’s national network and associated National Meteorological Centre’s ( NMC ) of neighboring countries
and to the RTH’s not situated on the MTN which they serve.
4. Checking and making corrections in order to maintain standard telecommunication procedure.
5. Establishing data disseminating systems territorial and/or via satellite as required in accordance with original plans;
6. Carrying out the monitoring of the operations of GTS of the WWW.
7.
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The new RTH system at New Delhi will be WIS GISC compliant and provide three fundamental types of
WIS services to meet the different requirements, as follows:
Routine collection and dissemination service for time-critical and operation-critical data and products:
This service is based on real-time “push” mechanism including multicast and broadcast; it would be implemented essentially
through dedicated telecommunication means providing a guaranteed quality of service;
•
Data Discovery, Access and Retrieval service:
•
This service is based on request/reply “pull” mechanism with relevant data management functions; it would be implemented
essentially through the Internet;
Timely delivery service for data and products:
This service is based on delayed mode “push” mechanism; it would be implemented through a combination of dedicated
telecommunication means and of public data-communication networks, especially the Internet.
8. The whole RTH system will be configured as two separate Message switching systems
(National MSS and International MSS System) and Database cum portal server.
9.
This system will be configured for high availability cluster.
10.
The traffic corresponding a particular LAN is not allowed to cross to other LAN unless it is authorized.
So individual LAN will be connected through firewall.
11.
The database system will decode and store data pool as well as metadata in the metadata pool and provide
web delivery on the front-end.
12.
Storage will be low latency and high volume.
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Mobile, WAN, MPLS VPN, DVB-VSAT, INSAT MDD,INSAT-DCWDS, WorldSpace DAB, DTH TV and Internet network shall be
connected to Server through firewall. In this system there will be RADAR, satellite, Earthquake, and multihazard information.
There will be Content Checker in hot stand-by redundant mode for Virus, Denial of service and spamming and will
have the facility to alert users and Administrator
National Cluster
International Cluster
F
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W
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Internet
GTS/HQ LAN
GTS Links with RTH New Delhi
Oman
Male
Soc(Int) Soc(Int)
Melbourne
Soc(Int)
Colombo
Soc(Int)
Moscow
Bangkok
64Kbs(TCP/IP
- FTP)
IPVPN(FTP)
RTH NEW DELHI
Yangon
Soc(int)
Kathmandu
50 bauds
and Internet
Tehran 75
bauds
64Kbps
Cairo
being
64Kbps
upgraded (SOC)
RTH NEW DELHI
Tokyo
IP-VPN
Beijing
IP-VPN
(FTP)
Jeddah 64Kbps
Soc(IP)
Karachi 64Kbps
Dhaka 64Kbps Soc(IP)
Soc(IP)
Recent Developments at RTH New Delhi
Table Driven Code Form: RTH New Delhi is
transmitting daily Synop (on test basis) and
SATOB messages of Indian Region in
BUFR Format to Tokyo through GTS
Digital Satellite Broadcast of IMD through
Asia Star satellite has been changed to
multicasting
File naming server installed is providing
data to users through TCP/IP Socket, E-mail,
SMS and FTP in WMO File naming
conventions. It has also feature of OCR
(Optical Character Recognition) to extract
information from imageries.
GMDSS bulletin is also placed on IMD
website in real time.
Proposed
RTH
Features
High Availability (more than 99.9%)
Cluster Mode
Duplex Web, E-mail and FTP
Conversion from CREX, BUFR, GRIB
to ASCII and vice versa
Audio visual Alarm for warning
messages
Message reception through PSTN/Dialup and SMS
Transmission of warnings through
SMS to predefined numbers.
File switching
OCR base FAX transmission and
reception
Authentication server for Internet
users
Bilingual features (English and Hindi)
Daily throughput of data -- 100 GB.
GUI base interface and web interface.
Ongoing Modernization Projects of Telecom Division
64 kbps
Terminal
Data Terminal
At
75 Observatories
AMSS
At
6 locations
(4 old +2 new)
IVRS
At 26 MCs
Common
People
Interne
t
RTH,
At New Delhi
64 kbps – 2 mbps Link
PSTN/Dial-Up Link
VSAT
Network
Mobile/SMS Link
( At 26 Locations )
VSAT Link
Internet Link for E-mail
& FTP
International
Network
VPN Link
Main Flow of Data
Data Terminal
( At 75 Observatories/Field Stations )
Data Terminal
At Observatories
Features:
Data Terminal
Locations
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The system will be PC (P-IV) based.
The system can connect to Data
Collecting Centers (64 kbps terminal)
using PSTN/Dial-up link for submission
and retrieval of data.
It will also supports transmission and
reception of messages via GSM based
GPRS or SMS.
The system can transmit and receive
messages via E-mail, FTP and FAX.
The system has browser based GUI for
data handling/manipulation, submit and
retrieve meteorological messages.
Proposed AMSS
( Existing 4 at Kolkata, Mumbal, Delhi and Chennai
and 2 new at Guwahati and Nagpur )
Features
High Availability (more than 99.9%)
Cluster Mode
Duplex Web, E-mail and FTP
Conversion from CREX, BUFR, GRIB
to ASCII and vice versa
WMO as well as AFTN switch
Audio visual Alarm for warning
messages
Message reception through PSTN/Dialup and SMS
Transmission of warnings through
SMS to predefined numbers.
File switching
OCR base FAX transmission and
reception
Authentication server for Internet
users
Bilingual features (English and Hindi)
Daily throughput of data -- 50 GB.
GUI base interface and web interface.
VSAT
Back
( At 26 Locations )
VSAT
Locations
VSAT:
All the VSATs are inter connected with
each other as well as RTH, New Delhi.
The VSAT system is connected to PC
through Ethernet Port.
All the VSAT systems is access to
Internet.
Standard Internet software packages
such as E-mail, FTP and Web is used to
connect to remote nodes of VSAT, AMSS,
HQ etc.
High Speed
Terminal
64 kbps
Terminal
( At 27 Locations )
Features:
64 kbps terminal
Locations
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The system is PC (P-IV) based.
Standard TCP/IP based socket
communication for transmission and
reception of messages.
Retrieval and submission of messages
through PSTN/Dial-up network.
Submission of messages through SMS.
Transmission and reception of messages
through E-mail in English and Hindi.
Web Interface.
GUI based module for submission and
retrieval of data.
IVRS
IVRS
( At 26 Locations )
Features:
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IVRS Locations
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The system receive WMO formatted
messages and decode these messages to
weather parameters for answering weather
queries by public.
The system interact with caller in English,
Hindi and at least one Regional language
of that place where it shall be installed.
The system work with all type of
exchange used in DOT/MTNL/BSNL etc.
including Mobiles.
The system operate round the clock with
99% uptime.
The system have provision to transfer the
call to the duty officer in case the caller
query is not available in the database.
No single point of failure.
GUI based administration modules.
Voice messages is recorded by
professionals.
Need for Modernization
DEPT. OF TELECOM IS WITHDRAWING TP/TELEX LINKS AND HAS ALREADY
WITHDRAWN FROM MANY PLACES.
DATA THROUGH TELEGRAMS REACHING VERY LATE.
HFRT (HIGH FREQUENCY RADIO TELEPHONY) IS OBSOLETE TECHNOLOGY AND
WORLD WIDE BEING REPLACED WITH LATEST TECHNOLOGIES AVAILABLE LIKE
SMS THROUGH MOBILE AND EMAIL SERVICES.
VPN IS LATEST TECHNOLOGY WITH ADVANTAGES OF CONNECTIVITY BETWEEN
ANY TO ANY IN COMPARISON TO DEDICATED LINKS WHICH IS CONNECTIVITY
BETWEEN ONLY TWO ASSIGNED LOCATIONS.
VPN LINKS ARE SECURED AND COST EFFECTIVE LINKS.
SMS AND EMAIL UTILIZES SIMULTANEOUS TRANSMISSION TO MULTI NODES
THUS DATA AVAILABILITY AT AMSS AND RTH ARE VERY FAST.
IVRS SYSTEM IS AVAILABLE ON AT 26 LOCATION (IN FOUR METROS,REGIONAL
MET CENTRES AND MET CENTRES. AS A PUBLIC WEATHER SERVICE IVRS
SYSTEMS .
AS PER WMO REQUIREMENTS RTH IS REQUIRED TO EXCHANGE BINARY DATA IN
BINARY UNIVERSAL FORM (BUFR) FORMAT, IMAGERIES AND WEB PAGES WHICH
ARE AT PRESENT NOT SUPPORTED BY OUR EXISTING SYSTEM.
REQUIREMENT OF AMSS SYSTEM AT NAGPUR AND AT GUWAHATI.
CATEGORY-I
85
OBSERVATORIES WITH
MULTIPLE OBSERVATIONAL
FACILITIES.
CATEGORY-II
385
OBSERVATORIES WITH LIMITED
OBSERVATIONAL FACILITIES.
CATEGORY-III
26
REMOTE OBSERVATORIES IN
MOUNTAIN, DESERT AND
OTHER INACCESSIBLE AREAS.
1.SIMULTANEOUS EXCHANGE OF
DATA WITH MULTIPLE NODES
2. REAL TIME DATA EXCHANGE.
Technology for modernization
VPN (VIRTUAL PRIVATE NETWORK) LINKS.
HIGH SPEED LINKS.
SMS THROUGH MOBILE SERVICE.
EMAIL SERVICES.
DIALUP CONNECTIVITY FOR DATA RETRIEVAL AND
SUBMISSION
VSAT LINKS AT COASTAL/DESERT AND MOUNTAIN AREAS.
SATELLITE BASED DIGITAL DATA BROADCAST AND ITS
RECEPTION.
INTERACTIVE VOICE RESPONSE SYSTEM (IVRS) – A PUBLIC
WEATHER SERVICE.
Annual Global Monitoring 2007
SYNOP
ANNUAL GLOBAL MONITORING 2007
TEMP
ANNUAL GLOBAL MONITORING 2007
CLIMATE
ANNUAL GLOBAL MONITORIN 2007
CLIMATE TEMP